Question

Repedeee va rog!!!!!!​ Dau coroană si 32 puncte!!!

Answer 1

a) A={10,11,12,13,14}

B={7,8,9,10,11,12,13,14}

AcB={10,11,12,13,14}

b)A={2,3,6,9}

B={...2,6,9,..}

AcB={2,6,9}

c)A={1,2,4,8}

B={0,2,4,6,8}

AcB={2,4,8}

d)-5<x+3<5

-8<x<8 =>A={-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7}

-7<(sau egal) x<(sau egal) 7 =>B={-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7}

AcB={-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7}

e)4x+11>67 |-11

4x>56 =>A={15,16,17,.....}

7x-5>(sau egal) 72 |+5

7x>(sau egal) 77 |:7 =>B={12,13,14,15,16,17,....}

AcB={15,16,17,....}

f)x*x-3|22 |+3

x*x|25 =>x=5 =>A={5}

B={....3,4,5}

AcB={5}

Sper ca e bine, succes!